[Midnightbsd-cvs] mports: Makefile: Point it to the latest png

[vganji at midnightbsd.org]

Log Message:
-----------
Point it to the latest png

Modified Files:
--------------
    mports/graphics/imlib:
        Makefile (r1.7 -> r1.8)
        (http://cvsweb.midnightbsd.org/mports/graphics/imlib/Makefile?r1=1.7&r2=1.8)